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/*******************************************************************************
OpenAirInterface
Copyright(c) 1999 - 2014 Eurecom
OpenAirInterface is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenAirInterface is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenAirInterface.The full GNU General Public License is
included in this distribution in the file called "COPYING". If not,
see <http://www.gnu.org/licenses/>.
Contact Information
OpenAirInterface Admin: openair_admin@eurecom.fr
OpenAirInterface Tech : openair_tech@eurecom.fr
OpenAirInterface Dev : openair4g-devel@eurecom.fr
Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
*******************************************************************************/
/*****************************************************************************
Source EmmDeregisteredNormalService.c
Version 0.1
Date 2012/10/03
Product NAS stack
Subsystem EPS Mobility Management
Author Frederic Maurel
Description Implements the EPS Mobility Management procedures executed
when the EMM-SAP is in EMM-DEREGISTERED.NORMAL-SERVICE state.
In EMM-DEREGISTERED.NORMAL-SERVICE state, the EPS update
status is EU1 or EU2, in the meantime a suitable cell has
been found and the PLMN or tracking area is not in the
forbidden list.
*****************************************************************************/
#include "emm_fsm.h"
#include "commonDef.h"
#include "networkDef.h"
#include "nas_log.h"
#include "emm_proc.h"
#include <assert.h>
/****************************************************************************/
/**************** E X T E R N A L D E F I N I T I O N S ****************/
/****************************************************************************/
/****************************************************************************/
/******************* L O C A L D E F I N I T I O N S *******************/
/****************************************************************************/
/****************************************************************************/
/****************** E X P O R T E D F U N C T I O N S ******************/
/****************************************************************************/
/****************************************************************************
** **
** Name: EmmDeregisteredNormalService() **
** **
** Description: Handles the behaviour of the UE while the EMM-SAP is in **
** EMM-DEREGISTERED.NORMAL-SERVICE state. **
** **
** 3GPP TS 24.301, section 5.2.2.3.1 **
** The UE shall initiate an attach or combined attach proce- **
** dure. **
** **
** Inputs: evt: The received EMM-SAP event **
** Others: emm_fsm_status **
** **
** Outputs: None **
** Return: RETURNok, RETURNerror **
** Others: emm_fsm_status **
** **
***************************************************************************/
int EmmDeregisteredNormalService(const emm_reg_t *evt)
{
LOG_FUNC_IN;
int rc = RETURNerror;
assert(emm_fsm_get_status() == EMM_DEREGISTERED_NORMAL_SERVICE);
switch (evt->primitive) {
case _EMMREG_REGISTER_REQ:
/*
* The user manually re-selected a PLMN to register to
*/
rc = emm_fsm_set_status(EMM_DEREGISTERED_PLMN_SEARCH);
if (rc != RETURNerror) {
/* Process the network registration request */
rc = emm_fsm_process(evt);
}
break;
case _EMMREG_ATTACH_INIT:
/*
* Initiate the attach procedure for EPS services
*/
rc = emm_proc_attach(EMM_ATTACH_TYPE_EPS);
break;
case _EMMREG_ATTACH_REQ:
/*
* An EPS network attach has been requested (Attach Request
* message successfully delivered to the network);
* enter state EMM-REGISTERED-INITIATED
*/
rc = emm_fsm_set_status(EMM_REGISTERED_INITIATED);
break;
case _EMMREG_LOWERLAYER_SUCCESS:
/*
* Initial NAS message has been successfully delivered
* to the network
*/
rc = emm_proc_lowerlayer_success();
break;
case _EMMREG_LOWERLAYER_FAILURE:
/*
* Initial NAS message failed to be delivered to the network
*/
rc = emm_proc_lowerlayer_failure(TRUE);
break;
case _EMMREG_LOWERLAYER_RELEASE:
/*
* NAS signalling connection has been released
*/
rc = emm_proc_lowerlayer_release();
break;
case _EMMREG_ATTACH_CNF:
/*
* Attach procedure successful and default EPS bearer
* context activated;
* enter state EMM-REGISTERED.
*/
rc = emm_fsm_set_status(EMM_REGISTERED);
break;
default:
LOG_TRACE(ERROR, "EMM-FSM - Primitive is not valid (%d)",
evt->primitive);
break;
}
LOG_FUNC_RETURN (rc);
}
/****************************************************************************/
/********************* L O C A L F U N C T I O N S *********************/
/****************************************************************************/